In polymer material fields such as silicone rubber, plastics, resins, paints, and coatings, the four-dimensional indicators of "reactivity — organic compatibility — reinforcement & toughening — weather/aging/UV resistance" of silicone components have always been the core contradiction restricting end-product performance and downstream application expansion. Traditional methyl silicone oil, while providing basic lubrication and inert stability, has methyl groups at both ends of the molecular chain, lacking reactive sites, making it difficult to chemically bond with organic materials such as polyurethane and acrylic. It can only rely on physical blending, resulting in poor compatibility, easy migration and precipitation, unable to achieve true reinforcement and toughening. Some reactive silicones claim to react, but with low double bond content and insufficient crosslinking efficiency, failing to meet the stringent requirements of High Temperature Vulcanizing (HTV) silicone rubber for strength and hardness. With the continuous upgrading of comprehensive demands for "weather resistance, aging resistance, UV resistance, reinforcement and toughening", finding a vinyl silicone oil with "strong reactive vinyl groups at both ends, wide viscosity range 0.7-20000 Mpa.s, vinyl content 0.03-29%, specific gravity 0.81-0.98" has become the core proposition for the refinement of domestic polymer-modified silicones.
Addressing this,
Anhui IOTA Silicone Oil Co., Ltd. officially launches
IOTA 273 Vinyl Silicone Oil (CAS: 68083-19-2). Characterized by "viscosity 0.7-20000 Mpa.s (25°C); molecular weight 186-155000; vinyl content 0.03-29%; specific gravity 0.81-0.98; 200KG coated iron drum packaging; non-hazardous storage and transportation", backed by "reactive vinyl double bonds at both ends + wide-spectrum viscosity matrix + excellent organic compatibility", it serves as the "live molding choice" for polymer modification,
achieving the leap from "inert methyl silicone oil difficult to react" to "vinyl silicone oil lively crosslinking reinforcement".
System Positioning: Vinyl Silicone Oil vs. Traditional Methyl Silicone Oil
IOTA 273 belongs to the vinyl-terminated polydimethylsiloxane system, distinct from traditional methyl silicone oil. Traditional methyl silicone oil has inert methyl groups at both ends, unable to participate in addition reactions, and can only physically blend with organic resins, resulting in weak interfacial bonding. IOTA 273 innovatively introduces vinyl (-CH=CH₂) active groups at both ends of the molecular chain — the introduction of double bonds breaks the chemical inertness of the molecular ends. Under catalyst action, it can undergo hydrosilylation with hydrogen-containing silicone oil, while chemically bonding with polyurethane, acrylic and other organic materials, thoroughly solving the industry pain points of "silicone oil incompatible and unreactive with organic materials".
Molecular Architecture: Reactive Vinyl Double Bonds + Wide-Spectrum Viscosity + Organic Compatibility
The core competitiveness of IOTA 273 stems from the precision molecular design of vinyl silicone oil:
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Reactive Vinyl Groups at Both Ends: The terminal vinyl groups undergo addition reaction with hydrogen-containing silicone oil under catalyst, achieving efficient crosslinking; the lively double bonds give the product strong chemical reactivity, making it an indispensable basic raw material for HTV production.
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Better Compatibility than Methyl Silicone Oil: The introduction of vinyl reduces the symmetry of the siloxane molecular chain, making surface energy better match organic materials. It is easier to compound with polyurethane, acrylic and other organic materials than methyl silicone oil, broadening application boundaries.
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Wide-Spectrum Viscosity Matrix: Provides over ten viscosity specifications from 0.7 to 20000 Mpa.s (corresponding molecular weight 186-155000), with vinyl content covering 0.03-29%, meeting differentiated needs from liquid silicone rubber to high-hardness HTV.
Performance Leap: From "Inert Difficult to React" to "Lively Crosslinking Reinforcement"
Introducing IOTA 273 brings a qualitative leap to polymer material formulations:
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Enhanced Strength and Hardness: Used as a basic raw material for HTV production, significantly improving tensile strength, tear strength and hardness of silicone rubber.
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Liquid Silicone Rubber Preparation: Serves as the core base material for liquid silicone rubber, providing controllable crosslinking density and elasticity.
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Organic Material Reaction Modification: Reacts with polyurethane, acrylic, etc., to produce composites with better weather resistance, aging resistance, and UV resistance, achieving reinforcement and toughening.
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Wide Industrial Use: Used as a modifying additive in plastics, resins, paints, and coatings to improve coating adhesion and durability.
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Safe and Easy Storage: Non-hazardous for storage and transportation, 200KG coated iron drum packaging, room temperature sealed ventilation sufficient.
Application Penetration: From HTV Silicone Rubber to Coatings and Resins
The application boundary of IOTA 273 covers all polymer scenarios requiring "active crosslinking + organic modification + reinforcement & toughening":
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High Temperature Vulcanizing Silicone Rubber HTV (Main Battlefield): As a basic raw material, through vinyl addition with hydrogen-containing silicone oil, builds a 3D crosslinked network, enhancing silicone rubber strength and hardness.
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Liquid Silicone Rubber: Low-to-medium viscosity grades (0.7-100 Mpa.s) suitable for liquid injection molding silicone rubber, providing rapid curing and high transparency.
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Polyurethane/Acrylic Modification: High vinyl content grades (10-29%) chemically bond with PU and acrylic resins to produce weather/aging resistant reinforced materials.
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Plastics Resins Paints: Added to plastics, resins, paints, and coatings to improve surface slip, wear resistance and UV resistance.
IOTA Technical Guide: Ventilated Cool Place, Away from Fire
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Application: Select corresponding viscosity and vinyl content grade according to target application; when used with hydrogen-containing silicone oil, add catalyst (e.g., platinum catalyst); recommended for HTV, liquid silicone rubber, PU modification, coating resins.
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⚠️ Taboo: Although non-hazardous, keep away from fire, avoid direct sunlight; catalyst system must avoid contact with sulfur, phosphorus, nitrogen and other poisoning substances; confirm vinyl content matches formulation before use.
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Storage: Store sealed at room temperature in a dry, ventilated and cool place, away from fire and direct sunlight; 200KG coated iron drum packaging, sealed from moisture.
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Handling: Wide viscosity range (0.7-20000 Mpa.s), low viscosity grades have good flowability for pumping, high viscosity grades may require heating for metering; specific gravity 0.81-0.98 increases with viscosity, verifiable by densitometer.
Industry Insight: In polymer-modified silicone oil, the molecular design of IOTA 273 — "reactive vinyl double bonds at both ends + wide-spectrum viscosity matrix + organic compatibility" — is the key path to achieving the trinity of "active crosslinking + reinforcement & toughening + weather/aging resistance" —
the introduction of vinyl double bonds solves the industry pain point of traditional methyl silicone oil: "inert difficult to react, only physical blending", while the wide-spectrum vinyl content coverage ends the application shortcoming of single-spec silicone oil: "unable to balance HTV strength and liquid silicone rubber flexibility". IOTA 273, with "CAS 68083-19-2 + viscosity 0.7-20000 Mpa.s + vinyl content 0.03-29% + non-hazardous" hard metrics,
fills the key supply chain link for domestic vinyl silicone oil in polymer modification (HTV/liquid silicone rubber/PU modification/coating resins), providing a mass-producible lively crosslinking high-performance vinyl silicone oil for downstream new material enterprises. This confirms that domestic modified silicones are leaping toward "methyl silicone oil → vinyl silicone oil → wide-spectrum active silicone oil" in terms of reactivity and reinforcement capabilities, with growing technical say in high-end polymer material fields.
